I'm a Super Cop

Detection of excreta is a technical activity, which is equivalent to going to the hospital for physical examination. The doctor will ask for excreta test.

Gu Chen is not afraid of police officer Wang's jokes. Anyway, at present, the important clues have not been found. It is also a kind of idle time to go to the technical department with bird droppings and bread crumbs.

By the way, it's time to return the manuscript to the forensic assistant.

It's a bit unreasonable to say that although the observation ability that has just been upgraded to specialized level is very strong, he has not made any achievements in the residence of a Guda Gaoshan.

Of course, after close investigation, the information captured by the specialized observation force is also complete.

After investigation of the whole room, no doubt was found. Gu Chen was only interested in the dead canary and the remains of bird droppings and bread crumbs on the ground.

General feeling, is there any defect in observation?

Or, in the process of ascension, there is a deviation in the observation of details and over interpretation of what is originally irrelevant.

But the problem is that after a series of investigations, I have verified the outstanding points of my skills one by one. It seems that there is no so-called deviation, and it is even more accurate than the observation of ordinary veteran comrades.

However, Gu Chen does not expect to rely on his previous experience to have excessive confidence in the subsequent cases.

The vast majority of unjust, false and wrong cases often lie in the police's excessive belief in the so-called experience in handling cases.

In some unconventional cases, it is necessary to break the rules and investigate from another perspective. Perhaps unexpected clues can be found.

Gu Chen doesn't like bird droppings now. If it wasn't convenient at that time, he would have taken it with the Canary carcass.

Although it sounds ridiculous

Police officer Wang drove the car to the city hall, under the building where the technical section is located.

"Gu Chen, I convinced myself to bring you here. That's my absolute trust in you." Officer Wang is very strange.

"So?" Asked Gu Chen.

"You can go up by yourself later, don't say I brought you here, OK?" Officer Wang looks at Gu Chen with a bitter gourd face.

Gu Chen nodded: "yes, I will go first."

Open the door, Gu Chen ready to go alone, at this time Lu Weiwei will call him: "Gu younger martial brother, I will go with you."

"Yes."

They left shoulder to shoulder, leaving only officer Wang in the car with a blank face.

"It's OK to lose face by one person, but what about two people? Are you not afraid to be laughed at by comrades of the Municipal Bureau? "

Since he wanted to be on the honor list, officer Wang suddenly felt that he was also a man to face.

Even if the case is blocked, I will follow two subordinates here to block people. Such things I don't want to have a second time.

Gu Chen and Lu Weiwei take the elevator and go straight to the fifth floor of the building.

This is the location of the technical department. Although there are not many personnel, there are many laboratories and various testing instruments are quite complete.

As soon as he entered the door, Gu Chen met the forensic assistant who had lent his manuscript. He immediately called elder martial brother Wu.

The assistant of forensic medicine squinted and looked back and said, "aren't you Gu Chen?"

"Yes, elder martial brother Wu."

"What are you doing here?"

"Return your manuscript." Gu Chen handed him the manuscript in his hand.

Forensic assistant Leng Leng Leng, inconceivable looking at him: "Gu Chen, you have read all? It's not so fast, is it

, in the impression of forensic assistant, did not want to master the essence in a few months.

Besides, Gu Chen usually has to go to work. He should take photos first, and then organize and study when he is free. This should be the case.

"It's really over." Gu Chen also modestly said: "elder martial brother Wu recorded in detail, which benefited me a lot."

The forensic assistant took the manuscript, carefully checked it, and said casually, "that's OK. I'm busy first, so I won't send it to you."

"No Lu Weiwei suddenly stopped him: "we are looking for forensic Liu, is he there?"

"Yes, it's in test room two. You can go there yourself." Forensic assistant looked very busy, after a few words, he left first.

Gu Chen and Lu Weiwei find the No.2 testing room by themselves

At the moment, forensic Liu, writing a report on his desk, seems to have just completed a test.

Gu Chen knocked on the door and walked in: "forensic Liu, I'm going to trouble you again."

Liu Fa Yi raised his head and pushed his glasses: "Oh! It's Gu Chen and Wei Wei. Why are you here? "

"There are several things I would like you to help test." Gu Chen takes out the document bag.

"In a hurry?" Liu asked, staring.

"Yes, it's very urgent. It's better to take it away after testing." Gu Chen is also an acute child, since he personally sent to the technical department, he does not want to go again.

"But I still have a report in hand.""Forensic Liu, please help me. Get in a team." Vivi was a face of a straight face.

As you all know, forensic expertise takes time.

Not busy, but fortunately, if busy, many detection items need to be queued for detection, after all, we all hope that the shortest time and the fastest speed to produce results.

Liu nodded and smiled and said, "well, for the sake of your personal delivery, please bring it. Just as soon as I am not in a hurry."

"That's great." Gu Chen quickly opened the file bag, and delivered several pieces of bird manure and bread crumbs in it to the forensic doctor Liu.

"You want to test the feces?" Asked Liu forensic.

"This is the feces of a canary. I suspect that this Canary may have eaten toxic substances, so..."

Gu Chen also said his guess.

Liu and Gu Chen partner many times, soon understood his meaning.

Although I don't know if there is any necessary connection between this and the case, it will certainly help Gu Chen to handle the case.

"Wait a moment." Liu forensic two words, take samples to the instrument.

Nowadays, the forensic examination of excreta is not as complicated as before, but most of the excreta are extracted from human beings.

But it is difficult to extract human DNA, but it may be able to identify the DNA of this person.

It is difficult to extract because feces contain undigested DNA fragments in food.

The DNA of the gut microorganism, like the DNA in the detached cells in the host digestive tract, is essentially the same, and it is impossible to separate the human DNA from other DNA.

But most of them need to be identified. It is feasible to identify the owner from fecal DNA.

Some parts of human DNA are highly variable regions, and each person is different, and only one specific gene amplification method is needed.

That is, PCR, PCR.

By amplifying this highly variable region, identifying the sequence, and comparing it with a database or a person's DNA, you can know the relationship between the feces and the host.

That is, it doesn't need to extract all the DNA, just identify the DNA.

In fact, forensic identification is conducted through this method.

But Gu Chen needs results, in fact, more simple than identification of DNA, only from animal feces, to find the associated points.

Liu forensic examination is a little faster. After comparing the data, Liu told Gu Chen: "I can tell you now that these bread crumbs are indeed toxic and there are also feces."

Gu Chen's eyes were bright, which was the result of his request. It seemed that the clues of the previous interruption suddenly became a piece of one another.

"That is, the canary, after eating this toxic bread for a long time, will it die?"

Liu forensic nodded: "yes, it is really caused by long-term consumption. I have a test result here. You can take it first."

Gu Chen took over the report and rose and bowed, "thank you, forensic Liu. Thanks for your help this time."

"Little." Liu forensic he laughed.

But the side of luweiwei was confused, she hurriedly asked: "brother Gu, are you any new findings?"

Gu Chen mysteriously said: "I will get on the bus later and talk about it in detail. Elder brother Wang doesn't want me to find the clue and report it? Just as I have the basis now. "